.my-tabs {
  max-width: 600px;

  ul, li {
    margin: 0;
    padding: 0;
    list-style: none;
  }

  .navs {
    display: flex;

    li {
      margin: 4px;
      padding: 5px 10px;
      cursor: pointer;

      &.active {
        border: 1px solid red;
      }
    }
  }

  .pane {
    padding: 10px;
    border: 1px solid blue;
  }
}